How to express a vector as a product of its length and direction?

So the way to  express a vector( ) as a product of its length and direction is

Step-by-step explanation:

Generally a vector  is  expressed as a product of its length and direction using the formula below  

Here v is the vector

        |v| is its magnitude (length)

         u is its unit vector (direction)

Now let take an example

Let  

The magnitude is mathematically evaluated as

The unit vector is mathematically represented as

So

250

step-by-step explanation:

15% chance.

step-by-step explanation:

3/10 times, the 5 year old will get a tablet. 5/10 times, the 13 yer old will get a tablet. multiply both fractions to get 15/100 times, both would have a tablet.